220v变5v ic-220v变直流5v小封装220MA电流，交流或者直流输入都可以，交流输入的时候输入端需要先整流（半波、全波都可以），40v~265v输入，经过220v变5v ic芯片电路，稳定输出5v200MA电流，可以给单片机、应急灯、蓝牙模块、wifi、继电器等元件供电，外围简单没有fb电阻。

220v to 5v ic-220v to DC 5v small package 220MA current, AC or DC input can be used, the input terminal needs to be rectified (half-wave or full-wave is ok) when AC input, 40v~265v input, after 220v to 5v ic Chip circuit, stable output of 5v200MA current, can supply power to MCU, emergency light, Bluetooth module, wifi, relay and other components, simple peripheral without fb resistance.